What phenomenon describes the shifting of a star's light spectrum due to its movement away from Earth?
Category: Knowledge · Difficulty: hard
Hint: This effect is observed in the light from distant galaxies.
Answer
Redshift
Explanation
Redshift occurs when a light source moves away from an observer, causing the light to shift toward the red end of the spectrum.
This is a hard knowledge riddle — a tricky one that takes a little thought. The answer is Redshift.
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